"water bath"

Spectrum Tubes demonstrate the wave properties of different gases.

This safe spectrum power supply features encased spectrum tubes.

Ideal for investigating the reflection of light at a plane mirror and at a water interface.

Classical demonstration of refraction and internal reflection.

The refraction tank with laser provides excellent visibility!

Efficiently illustrates the various types of diffraction.

This laser ray box is adjustable, magnetic, and bright enough to use in ambient light.

This is an excellent and economical set for introductory ray optics.